Well, I just hate to spoil all the summer suspense, but here’s the 49ers’ 53-man roster projection: QB (2): Colin Kaepernick, Blaine Gabbert Cut: Dylan Thompson Thompson, a rookie free agent, is obviously a strong candidate for the practice squad given the skimpy depth chart at this position. The 49ers didn’t use one of their …

Prior to his two seasons in Philadelphia, Gamble, 51, spent eight seasons in the 49ers’ personnel department, finishing as their director of player personnel from 2011-12. After Gamble left, he was replaced as director of player personnel by Joel Patten, who has since left the 49ers and not been replaced. …

Chryst, who will reportedly become the 49ers’ next offensive coordinator, will oversee an attack that hasn’t been elite in over a decade. Consider: The 49ers, Titans and Dolphins are the only teams that haven’t ranked among the NFL’s top 10 in yards or points per game since 2003. …

Steve Logan’s role with the 49ers is no longer unspecified. Logan, the head coach at East Carolina from 1992-2002, will sign a two-year contract to be the 49ers quarterbacks coach, WRAL-TV in Raleigh, N.C., reported today. …

Seven days after Jim Harbaugh was hired by the 49ers in 2011, he hired his former Stanford colleague, Greg Roman, to be his offensive coordinator. Four years later, it’s been two weeks since the 49ers hired Jim Tomsula, and the search for the next offensive coordinator continues. …

Logan, 61, was the offensive coordinator when Tomsula was head coach of the Rhein Fire in 2006. He went on to serve as Boston College’s offensive coordinator (2007-08) and the Buccaneers running backs coach (2009-11). Logan, the head coach at East Carolina from 1992-2002, has been out of coaching since Tampa Bay fired head coach Raheem Morris and his coaching staff after the 2011 season. …

Former 49ers nose tackle Aubrayo Franklin will return to the team with a different title: coach. The 49ers are expected to add Franklin, 34, to their staff as an entry level defensive assistant, a league source said. …

Consider: Those injury ravaged Patriots started 45 players during the 2005 season, an NFL record for a division champion (the 10-6 Patriots won the AFC East and lost a divisional-playoff game to Denver). Mangini used 23 different defensive starters, including 13 starters at the four spots in the secondary. That secondary was already without cornerback Ty Law, a four-time Pro Bowler with the Patriots from 1995-2004 who had been released in the offseason for salary-cap reasons. …

Prior to compiling a 33-47 record as the head coach of the Jets (2006-08) and Browns (2009-10), he was part of three Super Bowl titles with the Patriots under Bill Belichick. Mangini spent five seasons as New England’s defensive backs coach before he was promoted to defensive coordinator in 2005. …

With the 49ers, Sparano will oversee a position group marked by injuries and a lack of production in 2014. Tight end Vernon Davis, 30, a Pro Bowl selection in 2013, had 26 catches for 245 yards and didn’t have a touchdown after collecting two scores in the season opener. Meanwhile, Vance McDonald, a 2013 second-round pick, had just two catches for 30 yards in eight games before landing on injured reserve with a back injury. Tight ends Derek Carrier and Garrett Celek also ended the season injured reserve. …

One of the ex-head coaches who is drawn the 49ers’ interest is Tony Sparano, who has interviewed to be their tight ends coach, ESPN reported Wednesday. Sparano, 53, the Raiders’ interim coach for the final 12 games in 2014, had a 29-32 record with the Dolphins from 2008-11.